Add gitlab scm function (#34)

* Add gitlab scm function

* Fix gitlab name typo

* Make it member function instead of extension

Author: UmairKhalid786

deployer/src/main/kotlin/io/deepmedia/tools/deployer/model/Scm.kt

@@ -29,6 +29,13 @@ open class Scm @Inject constructor(objects: ObjectFactory) {
         sourceUrl { _ /* tag */ -> "https://bitbucket.org/$user/$repository/src/" }
     }
 
+    fun fromGitlab(user: String, repository: String) {
+        url.set("https://gitlab.com/$user/$repository")
+        connection.set("scm:git:git://gitlab.com/$user/$repository.git")
+        developerConnection.set("scm:git:ssh://gitlab.com:$user/$repository.git")
+        sourceUrl { tag -> "https://gitlab.com/$user/$repository/tree/$tag" }
+    }
+
     internal fun fallback(to: Scm) {
         url.convention(to.url)
         connection.convention(to.connection)
@@ -62,4 +69,4 @@ interface ScmScope {
         scm.connection.set(connection)
         scm.developerConnection.set(developerConnection)
     }
-}
+}